Magnum 257 problems
Magnum 257 problems
I got an older 257 Orange display model with dual 1969's. I have about .5-1 watt TX and broken up to no RX. Voltage Reg. SB778 has 13 volts . 7808 regulators give me 8 and 13volts. I get a chirping sound when I TX. I don't have any RX from a radio next to it.
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